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Physical Properties of Polonium and Platinum

Polonium
Platinum
Physical Properties of Platinum and Polonium


Physical Properties
Melting Point
254.00 °C   
99+
1,772.00 °C   
16
Boiling Point
962.00 °C   
99+
3,827.00 °C   
15
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
NA   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
3.50   
11
Brinell Hardness
Not Available   
300.00 MPa   
34
Vickers Hardness
Not Available   
400.00 MPa   
25
Speed of Sound
Not Available   
2,800.00 m/s   
29
Optical Properties
  
  
Reflectivity
Not Available   
73.00 %   
8
Allotropes
Yes   
No   
α Allotropes
α-polonium   
Not Available   
β Allotropes
β-polonium   
Not Available   
γ Allotropes
Not Available   
Not Available   
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